/*
 * This file is part of Ext JS 3.4 Copyright (c) 2011-2013 Sencha Inc Contact: http://www.sencha.com/contact GNU General Public License Usage This file may be
 * used under the terms of the GNU General Public License version 3.0 as published by the Free Software Foundation and appearing in the file LICENSE included in
 * the packaging of this file. Please review the following information to ensure the GNU General Public License version 3.0 requirements will be met:
 * http://www.gnu.org/copyleft/gpl.html. If you are unsure which license is appropriate for your use, please contact the sales department at
 * http://www.sencha.com/contact. Build date: 2013-04-03 15:07:25
 */
/**
 * @class Ext.BoxComponent
 * @extends Ext.Component <p>Base class for any {@link Ext.Component Component} that is to be sized as a box, using width and height.</p> <p>BoxComponent
 *          provides automatic box model adjustments for sizing and positioning and will work correctly within the Component rendering model.</p> <p>A
 *          BoxComponent may be created as a custom Component which encapsulates any HTML element, either a pre-existing element, or one that is created to your
 *          specifications at render time. Usually, to participate in layouts, a Component will need to be a <b>Box</b>Component in order to have its width and
 *          height managed.</p> <p>To use a pre-existing element as a BoxComponent, configure it so that you preset the <b>el</b> property to the element to
 *          reference:
 * 
 * <pre><code>
 * var pageHeader = new Ext.BoxComponent(
 * {
 * 	el: 'my-header-div'
 * });
 * </code></pre>
 * 
 * This may then be {@link Ext.Container#add added} to a {@link Ext.Container Container} as a child item.</p> <p>To create a BoxComponent based
 *          around a HTML element to be created at render time, use the {@link Ext.Component#autoEl autoEl} config option which takes the form of a
 *          {@link Ext.DomHelper DomHelper} specification:
 * 
 * <pre><code>
 * var myImage = new Ext.BoxComponent(
 * {
 * 	autoEl:
 * 	{
 * 		tag: 'img',
 * 		src: '/images/my-image.jpg'
 * 	}
 * });
 * </code></pre>
 * 
 * </p>
 * @constructor
 * @param {Ext.Element/String/Object} config The configuration options.
 * @xtype box
 */
Ext.BoxComponent = Ext.extend(Ext.Component,
{

	// Configs below are used for all Components when rendered by BoxLayout.
	/**
	 * @cfg {Number} flex <p><b>Note</b>: this config is only used when this Component is rendered by a Container which has been configured to use a <b>{@link Ext.layout.BoxLayout BoxLayout}.</b>
	 *      Each child Component with a <code>flex</code> property will be flexed either vertically (by a VBoxLayout) or horizontally (by an HBoxLayout)
	 *      according to the item's <b>relative</b> <code>flex</code> value compared to the sum of all Components with <code>flex</code> value specified. Any
	 *      child items that have either a <code>flex = 0</code> or <code>flex = undefined</code> will not be 'flexed' (the initial size will not be changed).
	 */
	// Configs below are used for all Components when rendered by AnchorLayout.
	/**
	 * @cfg {String} anchor <p><b>Note</b>: this config is only used when this Component is rendered by a Container which has been configured to use an <b>{@link Ext.layout.AnchorLayout AnchorLayout}
	 *      (or subclass thereof).</b> based layout manager, for example:<div class="mdetail-params"><ul> <li>{@link Ext.form.FormPanel}</li> <li>specifying
	 *      <code>layout: 'anchor' // or 'form', or 'absolute'</code></li> </ul></div></p> <p>See {@link Ext.layout.AnchorLayout}.{@link Ext.layout.AnchorLayout#anchor anchor}
	 *      also.</p>
	 */
	// tabTip config is used when a BoxComponent is a child of a TabPanel
	/**
	 * @cfg {String} tabTip <p><b>Note</b>: this config is only used when this BoxComponent is a child item of a TabPanel.</p> A string to be used as innerHTML
	 *      (html tags are accepted) to show in a tooltip when mousing over the associated tab selector element. {@link Ext.QuickTips}.init() must be called in
	 *      order for the tips to render.
	 */
	// Configs below are used for all Components when rendered by BorderLayout.
	/**
	 * @cfg {String} region <p><b>Note</b>: this config is only used when this BoxComponent is rendered by a Container which has been configured to use the <b>{@link Ext.layout.BorderLayout BorderLayout}</b>
	 *      layout manager (e.g. specifying <tt>layout:'border'</tt>).</p><br> <p>See {@link Ext.layout.BorderLayout} also.</p>
	 */
	// margins config is used when a BoxComponent is rendered by BorderLayout or BoxLayout.
	/**
	 * @cfg {Object} margins <p><b>Note</b>: this config is only used when this BoxComponent is rendered by a Container which has been configured to use the <b>{@link Ext.layout.BorderLayout BorderLayout}</b>
	 *      or one of the two <b>{@link Ext.layout.BoxLayout BoxLayout} subclasses.</b></p> <p>An object containing margins to apply to this BoxComponent in
	 *      the format:</p>
	 * 
	 * <pre><code>
	 * 	{
	 * 	top: (top margin),
	 * 	right: (right margin),
	 * 	bottom: (bottom margin),
	 * 	left: (left margin)
	 * 	}
	 * </code></pre>
	 * 
	 * <p>May also be a string containing space-separated, numeric margin values. The order of the sides associated with each value matches the way CSS
	 *      processes margin values:</p> <p><div class="mdetail-params"><ul> <li>If there is only one value, it applies to all sides.</li> <li>If there are
	 *      two values, the top and bottom borders are set to the first value and the right and left are set to the second.</li> <li>If there are three values,
	 *      the top is set to the first value, the left and right are set to the second, and the bottom is set to the third.</li> <li>If there are four values,
	 *      they apply to the top, right, bottom, and left, respectively.</li> </ul></div></p> <p>Defaults to:</p>
	 * 
	 * <pre><code>
	 * {top:0, right:0, bottom:0, left:0}
	 * </code></pre>
	 */
	/**
	 * @cfg {Number} x The local x (left) coordinate for this component if contained within a positioning container.
	 */
	/**
	 * @cfg {Number} y The local y (top) coordinate for this component if contained within a positioning container.
	 */
	/**
	 * @cfg {Number} pageX The page level x coordinate for this component if contained within a positioning container.
	 */
	/**
	 * @cfg {Number} pageY The page level y coordinate for this component if contained within a positioning container.
	 */
	/**
	 * @cfg {Number} height The height of this component in pixels (defaults to auto). <b>Note</b> to express this dimension as a percentage or offset see
	 *      {@link Ext.Component#anchor}.
	 */
	/**
	 * @cfg {Number} width The width of this component in pixels (defaults to auto). <b>Note</b> to express this dimension as a percentage or offset see
	 *      {@link Ext.Component#anchor}.
	 */
	/**
	 * @cfg {Number} boxMinHeight <p>The minimum value in pixels which this BoxComponent will set its height to.</p> <p><b>Warning:</b> This will override any
	 *      size management applied by layout managers.</p>
	 */
	/**
	 * @cfg {Number} boxMinWidth <p>The minimum value in pixels which this BoxComponent will set its width to.</p> <p><b>Warning:</b> This will override any
	 *      size management applied by layout managers.</p>
	 */
	/**
	 * @cfg {Number} boxMaxHeight <p>The maximum value in pixels which this BoxComponent will set its height to.</p> <p><b>Warning:</b> This will override any
	 *      size management applied by layout managers.</p>
	 */
	/**
	 * @cfg {Number} boxMaxWidth <p>The maximum value in pixels which this BoxComponent will set its width to.</p> <p><b>Warning:</b> This will override any
	 *      size management applied by layout managers.</p>
	 */
	/**
	 * @cfg {Boolean} autoHeight <p>True to use height:'auto', false to use fixed height (or allow it to be managed by its parent Container's
	 *      {@link Ext.Container#layout layout manager}. Defaults to false.</p> <p><b>Note</b>: Although many components inherit this config option, not all
	 *      will function as expected with a height of 'auto'. Setting autoHeight:true means that the browser will manage height based on the element's contents,
	 *      and that Ext will not manage it at all.</p> <p>If the <i>browser</i> is managing the height, be aware that resizes performed by the browser in
	 *      response to changes within the structure of the Component cannot be detected. Therefore changes to the height might result in elements needing to be
	 *      synchronized with the new height. Example:</p>
	 * 
	 * <pre><code>
	 * var w = new Ext.Window(
	 * {
	 * 	title: 'Window',
	 * 	width: 600,
	 * 	autoHeight: true,
	 * 	items:
	 * 	{
	 * 		title: 'Collapse Me',
	 * 		height: 400,
	 * 		collapsible: true,
	 * 		border: false,
	 * 		listeners:
	 * 		{
	 * 			beforecollapse: function()
	 * 			{
	 * 				w.el.shadow.hide();
	 * 			},
	 * 			beforeexpand: function()
	 * 			{
	 * 				w.el.shadow.hide();
	 * 			},
	 * 			collapse: function()
	 * 			{
	 * 				w.syncShadow();
	 * 			},
	 * 			expand: function()
	 * 			{
	 * 				w.syncShadow();
	 * 			}
	 * 		}
	 * 	}
	 * }).show();
	 * </code></pre>
	 */
	/**
	 * @cfg {Boolean} autoWidth <p>True to use width:'auto', false to use fixed width (or allow it to be managed by its parent Container's
	 *      {@link Ext.Container#layout layout manager}. Defaults to false.</p> <p><b>Note</b>: Although many components inherit this config option, not all
	 *      will function as expected with a width of 'auto'. Setting autoWidth:true means that the browser will manage width based on the element's contents, and
	 *      that Ext will not manage it at all.</p> <p>If the <i>browser</i> is managing the width, be aware that resizes performed by the browser in response
	 *      to changes within the structure of the Component cannot be detected. Therefore changes to the width might result in elements needing to be
	 *      synchronized with the new width. For example, where the target element is:</p>
	 * 
	 * <pre><code>
	 * 	&lt;div id='grid-container' style='margin-left:25%;width:50%'&gt;&lt;/div&gt;
	 * 	
	 * </code></pre>
	 * 
	 * A Panel rendered into that target element must listen for browser window resize in order to relay its child items when the browser changes its width:
	 * 
	 * <pre><code>
	 * var myPanel = new Ext.Panel(
	 * {
	 * 	renderTo: 'grid-container',
	 * 	monitorResize: true, // relay on browser resize
	 * 	title: 'Panel',
	 * 	height: 400,
	 * 	autoWidth: true,
	 * 	layout: 'hbox',
	 * 	layoutConfig:
	 * 	{
	 * 		align: 'stretch'
	 * 	},
	 * 	defaults:
	 * 	{
	 * 		flex: 1
	 * 	},
	 * 	items:
	 * 	[
	 * 	    {
	 * 		    title: 'Box 1'
	 * 	    },
	 * 	    {
	 * 		    title: 'Box 2'
	 * 	    },
	 * 	    {
	 * 		    title: 'Box 3'
	 * 	    }
	 * 	]
	 * });
	 * </code></pre>
	 */
	/**
	 * @cfg {Boolean} autoScroll <code>true</code> to use overflow:'auto' on the components layout element and show scroll bars automatically when necessary,
	 *      <code>false</code> to clip any overflowing content (defaults to <code>false</code>).
	 */

	/*
	 * // private internal config {Boolean} deferHeight True to defer height calculations to an external component, false to allow this component to set its own
	 * height (defaults to false).
	 */

	// private
	initComponent: function()
	{
		Ext.BoxComponent.superclass.initComponent.call(this);
		this.addEvents(
		/**
		 * @event resize Fires after the component is resized.
		 * @param {Ext.Component} this
		 * @param {Number} adjWidth The box-adjusted width that was set
		 * @param {Number} adjHeight The box-adjusted height that was set
		 * @param {Number} rawWidth The width that was originally specified
		 * @param {Number} rawHeight The height that was originally specified
		 */
		'resize',
		/**
		 * @event move Fires after the component is moved.
		 * @param {Ext.Component} this
		 * @param {Number} x The new x position
		 * @param {Number} y The new y position
		 */
		'move');
	},

	// private, set in afterRender to signify that the component has been rendered
	boxReady: false,
	// private, used to defer height settings to subclasses
	deferHeight: false,

	/**
	 * Sets the width and height of this BoxComponent. This method fires the {@link #resize} event. This method can accept either width and height as separate
	 * arguments, or you can pass a size object like <code>{width:10, height:20}</code>.
	 * 
	 * @param {Mixed} width The new width to set. This may be one of:<div class="mdetail-params"><ul> <li>A Number specifying the new width in the
	 *        {@link #getEl Element}'s {@link Ext.Element#defaultUnit}s (by default, pixels).</li> <li>A String used to set the CSS width style.</li> <li>A
	 *        size object in the format <code>{width: widthValue, height: heightValue}</code>.</li> <li><code>undefined</code> to leave the width
	 *        unchanged.</li> </ul></div>
	 * @param {Mixed} height The new height to set (not required if a size object is passed as the first arg). This may be one of:<div class="mdetail-params"><ul>
	 *        <li>A Number specifying the new height in the {@link #getEl Element}'s {@link Ext.Element#defaultUnit}s (by default, pixels).</li> <li>A String
	 *        used to set the CSS height style. Animation may <b>not</b> be used.</li> <li><code>undefined</code> to leave the height unchanged.</li> </ul></div>
	 * @return {Ext.BoxComponent} this
	 */
	setSize: function( w, h )
	{

		// support for standard size objects
		if( typeof w == 'object' )
		{
			h = w.height;
			w = w.width;
		}
		if( Ext.isDefined(w) && Ext.isDefined(this.boxMinWidth) && (w < this.boxMinWidth) )
		{
			w = this.boxMinWidth;
		}
		if( Ext.isDefined(h) && Ext.isDefined(this.boxMinHeight) && (h < this.boxMinHeight) )
		{
			h = this.boxMinHeight;
		}
		if( Ext.isDefined(w) && Ext.isDefined(this.boxMaxWidth) && (w > this.boxMaxWidth) )
		{
			w = this.boxMaxWidth;
		}
		if( Ext.isDefined(h) && Ext.isDefined(this.boxMaxHeight) && (h > this.boxMaxHeight) )
		{
			h = this.boxMaxHeight;
		}
		// not rendered
		if( !this.boxReady )
		{
			this.width = w;
			this.height = h;
			return this;
		}

		// prevent recalcs when not needed
		if( this.cacheSizes !== false && this.lastSize && this.lastSize.width == w && this.lastSize.height == h )
		{
			return this;
		}
		this.lastSize =
		{
			width: w,
			height: h
		};

		// 是否设置了autoHeight或者autoWidth
		var adj = this.adjustSize(w, h), aw = adj.width, ah = adj.height, rz;

		if( aw !== undefined || ah !== undefined )
		{ // this code is nasty but performs better with floaters
			
			// 获得resizeEl，若是没有取得el
			rz = this.getResizeEl();
			
			if( !this.deferHeight && aw !== undefined && ah !== undefined )
			{
				rz.setSize(aw, ah);
			}
			else if( !this.deferHeight && ah !== undefined )
			{
				rz.setHeight(ah);
			}
			else if( aw !== undefined )
			{
				rz.setWidth(aw);
			}
			this.onResize(aw, ah, w, h);
			
			this.fireEvent('resize', this, aw, ah, w, h);
		}
		return this;
	},

	/**
	 * Sets the width of the component. This method fires the {@link #resize} event.
	 * 
	 * @param {Mixed} width The new width to set. This may be one of:<div class="mdetail-params"><ul> <li>A Number specifying the new width in the
	 *        {@link #getEl Element}'s {@link Ext.Element#defaultUnit defaultUnit}s (by default, pixels).</li> <li>A String used to set the CSS width style.</li>
	 *        </ul></div>
	 * @return {Ext.BoxComponent} this
	 */
	setWidth: function( width )
	{
		return this.setSize(width);
	},

	/**
	 * Sets the height of the component. This method fires the {@link #resize} event.
	 * 
	 * @param {Mixed} height The new height to set. This may be one of:<div class="mdetail-params"><ul> <li>A Number specifying the new height in the
	 *        {@link #getEl Element}'s {@link Ext.Element#defaultUnit defaultUnit}s (by default, pixels).</li> <li>A String used to set the CSS height style.</li>
	 *        <li><i>undefined</i> to leave the height unchanged.</li> </ul></div>
	 * @return {Ext.BoxComponent} this
	 */
	setHeight: function( height )
	{
		return this.setSize(undefined, height);
	},

	/**
	 * Gets the current size of the component's underlying element.
	 * 
	 * @return {Object} An object containing the element's size {width: (element width), height: (element height)}
	 */
	getSize: function()
	{
		return this.getResizeEl().getSize();
	},

	/**
	 * Gets the current width of the component's underlying element.
	 * 
	 * @return {Number}
	 */
	getWidth: function()
	{
		return this.getResizeEl().getWidth();
	},

	/**
	 * Gets the current height of the component's underlying element.
	 * 
	 * @return {Number}
	 */
	getHeight: function()
	{
		return this.getResizeEl().getHeight();
	},

	/**
	 * Gets the current size of the component's underlying element, including space taken by its margins.
	 * 
	 * @return {Object} An object containing the element's size {width: (element width + left/right margins), height: (element height + top/bottom margins)}
	 */
	getOuterSize: function()
	{
		var el = this.getResizeEl();
		return {
			width: el.getWidth() + el.getMargins('lr'),
			height: el.getHeight() + el.getMargins('tb')
		};
	},

	/**
	 * Gets the current XY position of the component's underlying element.
	 * 
	 * @param {Boolean} local (optional) If true the element's left and top are returned instead of page XY (defaults to false)
	 * @return {Array} The XY position of the element (e.g., [100, 200])
	 */
	getPosition: function( local )
	{
		var el = this.getPositionEl();
		if( local === true )
		{
			return
			[
			    el.getLeft(true), el.getTop(true)
			];
		}
		return this.xy || el.getXY();
	},

	/**
	 * Gets the current box measurements of the component's underlying element.
	 * 
	 * @param {Boolean} local (optional) If true the element's left and top are returned instead of page XY (defaults to false)
	 * @return {Object} box An object in the format {x, y, width, height}
	 */
	getBox: function( local )
	{
		var pos = this.getPosition(local);
		var s = this.getSize();
		s.x = pos[0];
		s.y = pos[1];
		return s;
	},

	/**
	 * Sets the current box measurements of the component's underlying element.
	 * 
	 * @param {Object} box An object in the format {x, y, width, height}
	 * @return {Ext.BoxComponent} this
	 */
	updateBox: function( box )
	{
		this.setSize(box.width, box.height);
		this.setPagePosition(box.x, box.y);
		return this;
	},

	/**
	 * <p>Returns the outermost Element of this Component which defines the Components overall size.</p> <p><i>Usually</i> this will return the same Element
	 * as <code>{@link #getEl}</code>, but in some cases, a Component may have some more wrapping Elements around its main active Element.</p> <p>An example
	 * is a ComboBox. It is encased in a <i>wrapping</i> Element which contains both the <code>&lt;input></code> Element (which is what would be returned by
	 * its <code>{@link #getEl}</code> method, <i>and</i> the trigger button Element. This Element is returned as the <code>resizeEl</code>.
	 * 
	 * @return {Ext.Element} The Element which is to be resized by size managing layouts.
	 */
	getResizeEl: function()
	{
		return this.resizeEl || this.el;
	},

	/**
	 * Sets the overflow on the content element of the component.
	 * 
	 * @param {Boolean} scroll True to allow the Component to auto scroll.
	 * @return {Ext.BoxComponent} this
	 */
	setAutoScroll: function( scroll )
	{
		if( this.rendered )
		{
			this.getContentTarget().setOverflow(scroll ? 'auto' : '');
		}
		this.autoScroll = scroll;
		return this;
	},

	/**
	 * Sets the left and top of the component. To set the page XY position instead, use {@link #setPagePosition}. This method fires the {@link #move} event.
	 * 
	 * @param {Number} left The new left
	 * @param {Number} top The new top
	 * @return {Ext.BoxComponent} this
	 */
	setPosition: function( x, y )
	{
		if( x && typeof x[1] == 'number' )
		{
			y = x[1];
			x = x[0];
		}
		this.x = x;
		this.y = y;
		if( !this.boxReady )
		{
			return this;
		}
		var adj = this.adjustPosition(x, y);
		var ax = adj.x, ay = adj.y;

		var el = this.getPositionEl();
		
		if( ax !== undefined || ay !== undefined )
		{
			if( ax !== undefined && ay !== undefined )
			{
				el.setLeftTop(ax, ay);
			}
			else if( ax !== undefined )
			{
				el.setLeft(ax);
			}
			else if( ay !== undefined )
			{
				el.setTop(ay);
			}
			this.onPosition(ax, ay);
			
			this.fireEvent('move', this, ax, ay);
		}
		return this;
	},

	/**
	 * Sets the page XY position of the component. To set the left and top instead, use {@link #setPosition}. This method fires the {@link #move} event.
	 * 
	 * @param {Number} x The new x position
	 * @param {Number} y The new y position
	 * @return {Ext.BoxComponent} this
	 */
	setPagePosition: function( x, y )
	{
		if( x && typeof x[1] == 'number' )
		{
			y = x[1];
			x = x[0];
		}
		this.pageX = x;
		this.pageY = y;
		if( !this.boxReady )
		{
			return;
		}
		if( x === undefined || y === undefined )
		{ // cannot translate undefined points
			return;
		}
		var p = this.getPositionEl().translatePoints(x, y);
		this.setPosition(p.left, p.top);
		return this;
	},

	// private
	afterRender: function()
	{
		Ext.BoxComponent.superclass.afterRender.call(this);

		// 调整大小的对象
		if( this.resizeEl )
		{
			this.resizeEl = Ext.get(this.resizeEl);
		}

		// 调整位置的对象
		if( this.positionEl )
		{
			this.positionEl = Ext.get(this.positionEl);
		}

		this.boxReady = true;

		// 设置滚动条
		Ext.isDefined(this.autoScroll) && this.setAutoScroll(this.autoScroll);

		// 设置大小
		this.setSize(this.width, this.height);

		// 设置位置
		if( this.x || this.y )
		{
			this.setPosition(this.x, this.y);
		}
		else if( this.pageX || this.pageY )
		{
			this.setPagePosition(this.pageX, this.pageY);
		}
	},

	/**
	 * Force the component's size to recalculate based on the underlying element's current height and width.
	 * 
	 * @return {Ext.BoxComponent} this
	 */
	syncSize: function()
	{
		delete this.lastSize;
		this.setSize(this.autoWidth ? undefined : this.getResizeEl().getWidth(), this.autoHeight ? undefined : this.getResizeEl().getHeight());
		return this;
	},

	/*
	 * // protected Called after the component is resized, this method is empty by default but can be implemented by any subclass that needs to perform custom
	 * logic after a resize occurs. @param {Number} adjWidth The box-adjusted width that was set @param {Number} adjHeight The box-adjusted height that was set
	 * @param {Number} rawWidth The width that was originally specified @param {Number} rawHeight The height that was originally specified
	 */
	onResize: function( adjWidth, adjHeight, rawWidth, rawHeight )
	{
	},

	/*
	 * // protected Called after the component is moved, this method is empty by default but can be implemented by any subclass that needs to perform custom logic
	 * after a move occurs. @param {Number} x The new x position @param {Number} y The new y position
	 */
	onPosition: function( x, y )
	{

	},

	// private
	adjustSize: function( w, h )
	{
		if( this.autoWidth )
		{
			w = 'auto';
		}
		if( this.autoHeight )
		{
			h = 'auto';
		}
		return {
			width: w,
			height: h
		};
	},

	// private
	adjustPosition: function( x, y )
	{
		return {
			x: x,
			y: y
		};
	}
});
Ext.reg('box', Ext.BoxComponent);

/**
 * @class Ext.Spacer
 * @extends Ext.BoxComponent <p>Used to provide a sizable space in a layout.</p>
 * @constructor
 * @param {Object} config
 */
Ext.Spacer = Ext.extend(Ext.BoxComponent,
{
	autoEl: 'div'
});
Ext.reg('spacer', Ext.Spacer);